This handy Math in Focus Grade 2 Workbook Answer Key Chapter 15 Multiplication Tables of 3 and 4 detailed solutions for the textbook questions.
Math in Focus Grade 2 Chapter 15 Answer Key Multiplication Tables of 3 and 4
Math Journal
These items are sold in a supermarket. Use the items to write a multiplication story.
Example
I want to buy 4 boxes of cereal.
I will have to give the cashier $16.
Story
__________________
Answer:
I want to buy cracked which costs $3
I want to buy cereal which costs $4.
Put On Your Thinking Cap!
Challenging Practice
Question 1.
Steve starts reading a book on page 7. He reads the book for 4 days. He reads 3 pages each day. Which page will Steve stop at on the 4th day?
(Hint: Use a diagram to help you solve.)
Answer:
Given,
Steve starts reading a book on page 7.
He reads the book for 4 days.
He reads 3 pages each day.
So, 4 x 3 = 12
12 + 7 = 19
Therefore, on the 4th day, steve will stop on the 19th page.
Question 2.
The music teacher is selecting children to sit in the front row at a concert. 100 children are given numbers 1 to 100. The teacher first picks the child with the number 3. He then skip-counts by tens to pick the other children. What are the numbers of the other children who are picked?
The numbers are ___________________
Answer:
Given,
The music teacher is selecting children to sit in the front row at a concert.
100 children are given numbers 1 to 100.
The teacher first picks the child with the number 3.
He then skip-counts by tens to pick the other children.
Put On Your Thinking Cap!
Problem Solving
Solve the riddle.
Question 1.
I am a two-digit number. I am more than 20 but less than 30. I can be found in both the multiplication tables of 3 and 4. What number am I?
Answer:
Given,
I am a two-digit number.
I am more than 20 but less than 30.
I can be found in both the multiplication tables of 3 and 4.
Let the number be a
20 < a > 30
the numbers that are both multiple of 3 and 4 and between 20 and 30 is are 24 only ( 3 x 8 = 4 x 6 )
Therefore, the number is 24.
Chapter Review/Test
Vocabulary
Fill in the blanks with words from the box.
skip-counting
dot paper
related multiplication facts
Question 1.
____________ is fun!
Answer:
Question 2.
are examples of _____________.
Answer:
Concepts and Skills
Skip count to find the missing numbers.
Question 3.
9 × 3 = ____________
Answer:
Question 4.
___________ × 3 = 24
Answer:
Question 5.
_________ × 4 = 16
Answer:
Question 6.
_________ × 4 = 36
Answer:
Find the missing numbers.
Question 7.
8 groups of 3 = __________ × 3
= ___________
Answer:
Question 8.
7 groups of 4 = ___________ × 4
= ___________
Answer:
Use dot paper to find the missing numbers.
Question 9.
6 × 4 = 5 groups of 4 + ___________ group of 4
= ___________ + 4
= ___________
Answer:
Problem Solving
Use skip-counting or dot paper to solve.
Question 10.
Caleb ties sets of 3 medals with a piece of ribbon. He ties 10 sets of medals. How many medals does Caleb have in all?
Answer:
Use related multiplication facts to solve.
Question 11.
Gail has 32 star-shaped key chains. She puts 4 key chains equally into some boxes. How many boxes are there?
Answer: